#ifndef   _KEYBOARD_H
#define   _KEYBOARD_H

#include <reg52.h>
sbit ROW1=P1^3;
sbit ROW2=P1^2;
sbit ROW3=P1^1;
sbit ROW4=P1^0;
sbit COL1=P1^4;
sbit COL2=P1^5;
sbit COL3=P1^6;
sbit COL4=P1^7;

sbit beep = P2^0;

unsigned char Getkeyboard(void);

#endif